Deep copy?

[Lyle Kopnicky]

What's the simplest way to make a deep copy of a data structure?  
Certainly this must be in some standard module.  I'm trying to back up a 
portion of the registry, using Win32::TieRegistry, to a nested hash 
inside the program.  Later, I'll restore it.

--
Lyle Kopnicky
Software Project Engineer
Veicon Technology, Inc.
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